| 摘要 |
PURPOSE:To prevent an electrode short circuit by forming an active material layer, having the main component of nickel hydroxide, on the surface of a positive electrode in a condition where a substrate is nonexisting, and adding polytetrafluoroethylene to the active material layer. CONSTITUTION:An active material layer, having the main component of nickel hydroxide, is formed on the surface of a positive electrode in a condition where a substrate is nonexisting, and polytetrafluoroethylene is added to the active material layer. That is, carboxymethylcellulose and PTFE are added to nickel hydroxide to a mixed powder body composed of nickel hydroxide and nickel powder, and pure water is added to them, and kneading is made to manufacture paste. Succeedingly the paste is packed in a sintered fiber substrate and is applied to both the surfaces of the sintered fiber substrate, and the paste is dried and rolled with a roller press to manufacture a paste type nickel positive electrode. This can prevent the falling or winding failure of the active material layer at the time of winding. |
